Daim ntawv thov ntawm Zinc Chloride hauv Activated Carbon Activation

Ntaus Txiaj Ntsig carbon, uas tau ua kev zoo siab rau nws thaj chaw dav dav thiab muaj peev xwm nqus tau zoo kawg nkaus, tau tsim ib qho chaw tshwj xeeb hauv ntau yam lag luam. Nws cov ntawv thov suav nrog kev ntxuav dej thiab lim cua kom yooj yim rau kev tsim tshuaj lom neeg thiab khaws cia lub zog. Ntawm ntau yam txheej txheem ua kom muaj zog siv los txhim kho cov khoom ntawm Cov pa roj carbon, kev siv ntawm Zinc chloride tau tshwm sim los ua ib txoj hauv kev zoo tshwj xeeb. Tsab ntawv blog no lub hom phiaj yog tshawb nrhiav seb zinc chloride siv li cas hauv kev ua kom muaj zog Kev ua kom cov pa roj carbon, tshawb nrhiav nws cov txheej txheem hauv qab, cov txheej txheem ua kom muaj zog, nws cov txiaj ntsig, thiab cov teeb meem cuam tshuam.

Kev Ua Haujlwm Mechanism ntawm Zinc Chloride

Cov txheej txheem ua kom muaj zinc chloride nthuav tawm los ntawm kev sib koom ua ke ntawm lub cev thiab tshuaj phenomena. Thaum zinc chloride ua haujlwm ua tus neeg sawv cev, nws koom nrog cov ntaub ntawv carbonaceous precursor ntawm qhov kub siab. Nyob rau theem molecular, zinc chloride ua haujlwm ua tus neeg ua kom lub cev qhuav dej, tshem tawm cov dej molecules los ntawm qhov ua ntej. Qhov no lub cev qhuav dej pib decomposition ntawm cov organic teeb meem, ua rau tsim cov pores nyob rau hauv cov qauv carbon.

Chemically, zinc chloride ua raws li ib tug catalyst rau lub rearrangement ntawm carbon atoms, txhawb txoj kev loj hlob ntawm ib tug ntau lub koom haum thiab porous carbon network. Raws li qhov kub thiab txias nce, zinc chloride melts thiab permeates lub precursor, ua kom qhov chaw sib cuag ntawm tus neeg sawv cev activating thiab cov khoom carbonaceous. Qhov kev sib cuam tshuam zoo no ua rau cov txheej txheem ua kom muaj txiaj ntsig zoo dua, ua rau muaj cov qauv pore hierarchical uas suav nrog micropores, mesopores, thiab qee zaus macropores. Lub xub ntiag ntawm qhov sib txawv ntawm qhov pore qhov ntau thiab tsawg yog qhov tseem ceeb tshaj plaws, vim nws endows activated carbon nrog lub peev xwm los adsorb ib tug dav spectrum ntawm molecules, contingent raws li lawv loj thiab cov yam ntxwv.

Cov txheej txheem qhib

Cov txheej txheem ua kom siv zinc chloride muaj ntau kauj ruam sib law liag. Thaum pib, cov pa roj carbonaceous precursors, uas tuaj yeem yog los ntawm ntoo thiab Txiv maj phaub plhaubs rau thee, raug tsoo thiab ntsuas kom haum. Tom qab ntawd, cov precursors no raug muab tso rau hauv cov kua zinc chloride, ib qho txheej txheem hu ua impregnation. Qhov piv impregnation, uas sawv cev rau qhov sib piv ntawm zinc chloride rau cov khoom siv precursor, raug tswj hwm zoo. Qhov sib piv no cuam tshuam rau cov khoom kawg ntawm cov pa roj carbon activated; qhov sib piv siab dua feem ntau ua rau muaj cov qauv pore ntau dua tab sis kuj tseem yuav cuam tshuam rau cov txiaj ntsig ntawm cov pa roj carbon activated.

Tom qab impregnation, qhov sib tov yog qhuav kom tshem tawm cov dej noo ntau dhau. Cov khoom qhuav yog tom qab ntawd raug kev kho cua sov hauv qhov chaw tsis zoo, xws li nitrogen lossis argon. Qhov pyrolysis theem no tshwm sim ntawm qhov kub ntawm 400 ° C thiab 700 ° C. Thaum lub sij hawm no thermal txheej txheem, zinc chloride activates lub precursor raws li cov mechanisms tau piav ua ntej lawm, ua rau lub tsim ntawm activated carbon. Tom qab - pyrolysis, cov tshiab tsim cov pa roj carbon monoxide raug ntxuav kom huv si kom tshem tau cov zinc chloride seem. Cov kauj ruam ntxuav no yog qhov tseem ceeb rau kev ua kom huv si thiab kev ua haujlwm ntawm cov khoom kawg, vim tias cov zinc chloride ntxiv tuaj yeem cuam tshuam qhov kev ua haujlwm adsorption thiab ua rau muaj kev nyab xeeb hauv qee yam kev siv.

Qhov zoo ntawm Zinc Chloride Activation

Ib qho txiaj ntsig tseem ceeb tshaj plaws ntawm kev siv zinc chloride hauv kev ua kom cov pa roj carbon activated yog nyob rau hauv kev tswj hwm nws muaj tshaj qhov pore qauv. Los ntawm kev tswj tsis tau xws li qhov sib piv impregnation thiab ua kom kub, cov tuam ntxhab tuaj yeem hloov kho cov pa roj carbon activated kom tau raws li cov kev cai tshwj xeeb ntawm kev siv sib txawv. Piv txwv li, hauv daim ntawv thov roj adsorption qhov twg cov adsorption ntawm me me molecules yog ib qho tseem ceeb, cov pa roj carbon activated nrog lub siab ceev ntawm micropores tuaj yeem ua ke. Conversely, rau cov kua - theem adsorption, ib tug activated carbon nrog ib tug ntau balanced pore qauv, featuring ib tug ntau yam ntawm cov mesopores, feem ntau nyiam.

Zinc chloride activation kuj boasts kuj muaj kev ua haujlwm siab, ua rau cov pa roj carbon activated nrog thaj tsam loj thiab qhov pore ntim siab. Qhov kev ua tau zoo no txhais tau tias cov khoom siv tsawg dua yuav xav tau los tsim cov pa roj carbon monoxide nrog cov yam ntxwv xav tau piv rau lwm txoj kev ua kom muaj zog. Ntxiv mus, cov txheej txheem yog qhov nrawm, txo lub sijhawm tsim khoom thiab cov nqi cuam tshuam. Tsis tas li ntawd, zinc chloride yog dav siv thiab raug nqi - zoo, ua rau tag nrho cov txheej txheem ua kom muaj txiaj ntsig zoo, tshwj xeeb tshaj yog rau kev tsim khoom loj.

Muaj peev xwm sib tw thiab kev daws teeb meem

Txawm hais tias nws muaj txiaj ntsig ntau, zinc chloride ua kom tsis muaj qhov nyuaj. Ib qho kev txhawj xeeb tseem ceeb yog nws qhov kev cuam tshuam ib puag ncig. Zinc chloride yog ib qho tshuaj lom neeg, thiab kev pov tseg tsis raug ntawm cov khoom pov tseg thaum lub sij hawm ua kom tiav, tshwj xeeb tshaj yog cov dej khib nyiab uas muaj zinc chloride seem, tuaj yeem ua rau cov av thiab dej paug. Txhawm rau txo qhov teeb meem no, cov thev naus laus zis thev naus laus zis kho dej khib nyiab, xws li dej nag lossis daus thiab ion pauv, tuaj yeem siv los tshem cov zinc ions ntawm cov dej khib nyiab ua ntej tso tawm. Kev rov ua dua tshiab thiab rov siv cov tshuaj zinc chloride tuaj yeem pab txo qis ib puag ncig hneev taw thaum txo cov nqi tsim khoom.

Lwm qhov kev sib tw muaj feem xyuam rau kev tswj kom zoo ntawm cov khoom kawg. Kev tshem tawm tsis tiav ntawm cov seem zinc chloride tuaj yeem ua rau xeb hauv qee qhov kev siv thiab cuam tshuam rau cov txheej txheem adsorption. Kev ntsuas kev tswj xyuas nruj yog qhov tseem ceeb, suav nrog kev tshuaj xyuas tsis tu ncua ntawm cov pa roj carbon activated rau cov ntsiab lus zinc seem uas siv cov txheej txheem zoo li atomic absorption spectroscopy (AAS) lossis inductively coupled plasma - optical emission spectroscopy (ICP - OES). Tsis tas li ntawd, kev ua kom zoo ntawm cov txheej txheem ntxuav, xws li nce tus naj npawb ntawm cov kauj ruam ntxuav lossis siv cov tshuaj ntxuav kom tsim nyog, tuaj yeem txhim kho kev tshem tawm cov seem zinc chloride thiab xyuas kom cov khoom zoo.

Hauv kev xaus, zinc chloride plays lub luag haujlwm tseem ceeb hauv kev ua kom cov pa roj carbon activated, muab cov txiaj ntsig sib txawv ntawm cov qauv pore customization, ua kom muaj txiaj ntsig zoo, thiab tus nqi - kev ua tau zoo. Txawm li cas los xij, hais txog qhov cuam tshuam ntawm ib puag ncig thiab kev ua tau zoo - kev tswj cov kev sib tw yog qhov tseem ceeb rau kev tsim cov khoom siv hluav taws xob zoo thiab muaj txiaj ntsig zoo. Raws li qhov kev thov rau cov pa roj carbon activated tseem loj hlob thoob plaws ntau qhov chaw, kev tshawb fawb thiab kev tsim kho yav tom ntej hauv zinc chloride - raws li cov txheej txheem ua kom muaj zog yuav tsom mus rau kev txhim kho ib puag ncig kom ruaj khov thiab txhim kho cov khoom zoo.